Clicking hamburger icon on Toolbar does not open Navigation Drawer

Question

I have a simple android.support.v7.widget.Toolbar and all I am trying to do is to open a NavigationDrawer by pressing the \"hamburger\" icon in the top left cor

Answer 1

Override onOptionsItemSelected method and use below

if(item.getItemId() == android.R.id.home){ // use android.R.id
    mDrawerLayout.openDrawer(Gravity.LEFT);
}